Backlight module and liquid crystal display

Abstract

The present disclosure provides a backlight module, which includes: a transparent light guiding body having a light incidence side surface and a sealed accommodating cavity; a plurality of quantum dots accommodated in the accommodating cavity; and a light source disposed adjacent to the light incidence side surface. The present disclosure also provides a liquid crystal display having the backlight module. The present disclosure prevent the quantum dot material from being affected by moisture and oxygen by sealing the quantum dot materials using glass flat plates, thereby facilitating the display of the liquid crystal display.

What is claimed is: 
     
       1. A backlight module for a liquid crystal panel, the backlight module comprising:
 a transparent light guiding body having a light incidence side surface, a sealed accommodating cavity, and a light emitting upper surface; 
 a plurality of quantum dots accommodated in the accommodating cavity; and 
 a light source disposed adjacent to the light incidence side surface, 
 wherein the transparent light guiding body comprises a first transparent flat plate and a second transparent flat plate disposed to face each other with an interval, the first transparent flat plate and the second transparent flat plate are connected to each other around an entire circumference to form the accommodating cavity between the first transparent flat plate and the second transparent flat plate, and the first transparent flat plate and the second transparent flat plate are made of a same material, and 
 wherein the transparent light guiding body of the backlight module has a substantially same size as the liquid crystal panel to allow light emitted from the light source to be incident to the transparent light guiding body through the light incidence side surface and to exit the transparent light guiding body through the light emitting upper surface and enter the liquid crystal panel. 
 
     
     
       2. The backlight module of  claim 1 , wherein side surfaces of the first transparent flat plate and the second transparent flat plate at the same side form the light incidence side surface. 
     
     
       3. The backlight module of  claim 2 , wherein the circumference of the first transparent flat plate and the second transparent flat plate are connected together through a method of laser melting. 
     
     
       4. The backlight module of  claim 2 , wherein the first transparent flat plate and the second transparent flat plate are made of glass. 
     
     
       5. The backlight module of  claim 2 , wherein the first transparent flat plate has recesses and protrusions on a surface of the first transparent flat plate being far away from the second transparent flat plate. 
     
     
       6. The backlight module of  claim 2 , wherein the second transparent flat plate has dots on a surface of the second transparent flat plate being far away from the first transparent flat plate. 
     
     
       7. The backlight module of  claim 2 , further comprising a reflective sheet disposed to face a surface of the second transparent flat plate being far away from the first transparent flat plate. 
     
     
       8. The backlight module of  claim 6 , further comprising a reflective sheet disposed to face the surface of the second transparent flat plate being far away from the first transparent flat plate. 
     
     
       9. The backlight module of  claim 1 , wherein the light source is a blue light LED, and the plurality of quantum dots are used to convert blue light emitted from the light source into white light. 
     
     
       10. A liquid crystal display, comprising:
 a liquid crystal panel; and 
 a backlight module disposed under the liquid crystal panel, wherein the backlight module comprises:
 a transparent light guiding body having a light incidence side surface, a sealed accommodating cavity, and a light emitting upper surface; 
 a plurality of quantum dots accommodated in the accommodating cavity; and 
 a light source disposed adjacent to the light incidence side surface, 
 wherein the transparent light guiding body comprises a first transparent flat plate and a second transparent flat plate disposed to face each other with an interval, the first transparent flat plate and the second transparent flat plate are connected to each other around an entire circumference to form the accommodating cavity between the first transparent flat plate and the second transparent flat plate, and the first transparent flat plate and the second transparent flat plate are made of a same material, 
 
 wherein the transparent light guiding the body of the backlight module has a substantially same size as the liquid crystal panel to allow light emitted from the light source to be incident to the transparent light guiding body through the light incidence side surface and to exit the transparent light guiding body through the light emitting upper surface and enter the liquid crystal panel, and 
 wherein the transparent light guiding body of the backlight module is disposed under the liquid crystal panel. 
 
     
     
       11. The liquid crystal display of  claim 10 , wherein side surfaces of the first transparent flat plate and the second transparent flat plate at the same side form the light incidence side surface. 
     
     
       12. The liquid crystal display of  claim 11 , wherein the liquid crystal panel comprises:
 an array substrate disposed over the first transparent flat plate; 
 a color film substrate disposed over the array substrate, and the color film substrate and the array substrate being assembled by cell aligning; and 
 a liquid crystal disposed between the array substrate and the color film substrate that are assembled by cell aligning.